Gyratory crusher.



No. 895,634. PATEN TED AUG. 11, 1908.

O. L. HATHAWAY.

GYRATORY GRUSHER.

APPLTGATION IIYLED JAN. 14, 1907.

3 SHEETS-SHEET 1.

. ATTORNEY.

R m m m 3 SHBBTSSIHBET 2.

PATENTED AUG. 11, 1908.

C. L. HATHAWAY. GYRATORY CRUSHER.

APPLICATION FILED JAN 14 1907 W] NES ATTORNEY.

PATENTED AUG. 11, 1908.

0. L. HATHAWAY. GYRATORY ORUSHER.

APPLICATION TILED JAN.14, 1907.

s SHEETS-SHEET 3.

TORN E Y.

UNITED STATES PATENT orricn CHARLES L. HATHAWAY, OF DFNVEROOLORADO, ASSIGNOR TO THE C. L. liATHAWAY ROCK ORUSHER COMPANY, OF DENVER, COLORADO, A CORPORATION OF COLORADO.

GYRATORY CRUSHER.

Specification of Letters Patent.

Patented Aug.'11, 1908.

' To all whom it may concern: 4

-Be it known that I, OHA'RLEs L. HATHA- WAY, a citizen of the United States of America, residing at Denver, in the county of Denver and State of Colorado, have invented certain new and useful Im roveme'nts in Gyratory Crushers, of whic the following is a specification.

My invention relates to improvements in gyratory crushers and more articularly to the class of c'rushers described and shown in the applications for United States patents, Serial umbers 309,672 and 309,673 filed by me April 3,. 1906.

provide a device of the class named which emg composed of a minimum number of parts, is sim 'le and inexpensive in construction and which, having all its working parts supported upon the base or bed-plate, is abso utely self contained.

Further advantages derived. from the con- I struction of m device will be brought out in the flexible dust-proo the following escription, reference being had to the accompanying drawings in the various views of which like parts are similarly designated and in which Figure 1. represents a vertical section through the device, Fig. 2- a plan view thereof, 'Fig'. 3 a horizontal section taken along a line 3-3, Fig. 1, Fig. 4 a perspective view of the apparatus, drawn to a reduced scale, Fig. 5 an enlarged fragmentary view of the upper portion of the stepbox and the therein sufpported shaft, showing cap employed to protect the bearin against pulverous particles of the rock disc arged from the hopper, and Fig. 6 a horizontal section taken along a line 66, Fig.5.

r In the drawings 5 desi nates the bed or base of the device whic in ractice, is

, mounted upon a suitable foun ation, and

which comprises a.bottom plate 6 and four superposed plates 7, which extending in a plane (parallel to the bottom plate and at equal i's'tances from its center, are connected therewith b integral, webbed standards 8.-

The base is urthermore provided with a central, holl0w cylindrical body 9 which extending above and below the bottom late 6, is bored to receive the diametrical y corresponding, vertically adjustable step 10 which, i111 ractice, supports the upright, gyrating sia t 12.

Mounted upon the lates 7 is the inverted, conically shaped shel or mortar 13, in which the material under treatment is, in practice, comminuted and which is provided with four pairs of laterally extending flanges 14 and 15, the members of which are respectively arranged in horizontal planes with the up- ,per and lower edges of the shell and connected by integral, interposed webs 16, The lower flanges 15 of the mortar are in practice, placed upon the upper surface of the plates 7 on the base, to which they are secured by means of bolts 17, while two opposite flanges 14 on the u per edge of the mortar, support The ob ect of the present inventio' n is to cheeks 20 connected by a vertically extend-- ing web 21,.

A conical ho per 45, the lower edge of which engages the upper ed e of the mortar, is secured to the standar s which extend along its outer surface and is furthermore reinforced and secured b two angular brackets 40 which are bolte upon the other two flanges 14-of the mortar.

Rigidly secured upon the standards is the centrally disposed cylindrical boxing 22, the diametrically o posite, outwardly extending arms 23 of whic 1 are secured upon the uppermost cheeks 20 by means of bolts 24.

.Arranged upon the outer extremities of the arms are the axially alined journal boxes 25 which, in practice, sup ort a counter shaft 26 having looseand fixed ullegs the 'usual purpose and a evel-pinion 29 which meshes into a bevel-gear wheel 30, r0- tatably mounted in the vertical bore 31 of the cylindrical boxing 22.

The hub32 of gear 30 which bears upon the upper edge of the box, has a diametrically reduced extension 33 which extending through the bore 31, projects below the boxing and is provided with a collar 34 which ongaging the lower edge of the cylindrical body 22, prevents vertical displacement of the gear.

27 and 28 for.

' tact with t A bushing' 35, disposed in a central vertical bore 36 in the gear hub, has ,aneccentric,

obliquely ranging bore 37 through which extends the upper portion of the before named which is mounted uponthe conically shaped portion 12 ofthe shaft inside: the mortar 13,

and which is surrounded by a corres ondingly shaped mantle 39 made of bar ened steeland preferably com osed of a plurality of adjoining sections to acilitaterenewal in case of wear or breakage.

A conically shaped "sleeve .41 surrounding the portion of the shaft inside the hopper 40 in superposed relation to the head, rotects the shaft a ainst wear and damage y cone continually agitated mass of rock. Y

The crushing head andv the'su er osed sleeve are secured against longitudinal displacement by two nuts 42 and 43, one threaded portion 12 of the shaft, the lower one, 42, engaging the upper edge of the sleeve, while the upper one, 43, is split and clamped around the shaft and in engagement withnut'42, by means of a bolt 44. Similarly arrangednuts .45 and 46 are screwed onto the threaded portion 12 d of the shaft in engagement with the collar 34, for the urpose of holding the shaft against longitu inal' I with the collar.-

isplacement. A washer 47, composed of fiber or otherrefractory substance, 1S preferably interposed between the collar, and the upper nut 45 to prevent production of heat by frictional contact of the revolving nut The lowerextremity of shaft 12 extending into the'vertical bore of the'central body por-- tion 9 of'the base, engages the before mentioned step -10 which is vertically adjustable within the said bore -and- 'rovided with a wearing late .48 made of ardened metal, which is et into a recess in its upper surface. The lower extremity of the step, protruding below the cylindrical body 9, engages the upper surface of a follower 49 which is vertically movable along stud-bolts'50, extending downwardly from the said body through corresponding apertures 51. Nuts 52 on the stud bolts are intended to maintain the follower at any desired elevation.

To prevent dust and dirt from reaching the contacting surfaces of the shaft and the wearing plate 48 in the step, the bore in the cylindrlcal body 9 0n the ase is provided with a.

bushing 53 and its mouth closed by means of a ca mem er 55 having a flange 56 extending downwardly from its outer edge, a washer 57 made of rubber or other flexible material,

7 surrounding and engaging the shaft above the member 55, and a ring 58 placed upon the flexible ring and-secured to the member 55 by means of a plurality of bolts 59. A cy- 54, composed of an annular metal 'lindrical ring 60 composedlof flexible mate'- rlal, is'secured by bolts 62 along the inner ring 60 with the body 9, effectually excludes all dust and dirt. from the step' bearing while the flexibility of the said rings permits the gyrator -movement of the shaft,which at this en is slight. 4

It will be observed that if so desired, the

rbore of-the base above the step box may be filled with oil or other lubricating medium which at anytime, during the operation of the device may be introduced therein through a ipe 61 shown in Fig; 1.

aving thus described the mechanical construction of the device, its operation will .be readily understood.

The rock or' ore to be crushed is fed into the ho per 40 from where it passes into the space etween the crushing head and the inner surface of the mortar. The gyratory movement, of the head imparted thereto by means of the eccentricposltion of the u per extremity of its shafti'n the bushing 0 the adually crushes the bevel gear' wheel 30, rock until it reduce to a size sufliciently small to pass through the annular space be tween the lowermost edges of the head and the mortar.

It will be observed that inasmuch as the greatest movement of the head is at the mouth of the mortar, where it comes in contact with the rock as it is fed into the hopper, the largest pieces will be subjected to the greatest amount of crushing force and that the said force and the size of the fragments of rock'are gradually reduced comparative relation, as the lower end or throat of the mortar is approached. The result is that the matter fed Into the hopper passes through the mortar in a continuous stream to be discharged into a suitable subjacent receptacle. The continuous flow of the material is aided by the movement of the crushing head which tends to impel the particles downwardly. Considering that in addition to these features, the crushing force'of the device is augmented by the weight of the head and shaft,

which in practice may be raised off the step, and that the unobstructed feed openings between the standards ermit continuous feeding without danger o clogging or bridging of the material, it will be understood that with the device as set forth in the foregoing descri tion the maximum capacity is obtained with the minimum of power, while uniformity of the product is assured.

Toalter the size of the product or to compensate for wear. of the mantle on the crushmg head or of the linin' head may be raised or%owered by vertical adjustment of the step which may be accomof the mortar, the

plished without interference with the operation of the machine or the arrangement of its parts.

Having thus described my invention what I claim is 1. A gyratory crusher comprisin in combination, a base, a superposed shel or mortar,- an upright shaft having a conical enlargement within the said shell, its lower extremity engaging the said base, means near its upper extremity to impart a gyratory movement thereto, a crushing head bored to fit the said conical enlargement, a nut for holding the head against vertical movement, and clamping means engaging with the nut to lock the same on-the shaft.

2. A gyratory crusher comprisin in combination, a base, a su erposed shel or mortar, an upright shaft liaving a crushing ele ment within the said shell, its lower extremity engaging the base, vertically extending standards, a bearing member connecting their upper extremities, means upon the said member to impart a gyratory movement to the shaft, and nuts uponthe shaft below the said bearing member, to prevent longitudinal displacement thereof.

3. A gyratory crusher comprising in combination, a base, a superposed shell or mortar, an upright shaft having a crushing element within the said shell, its lower extremity engaging the base, vertically extending standards, a bearing member connecting their upper extremities, a gear wheel revolubly mounted upon the said member, means cooperating with said wheel to impart a gy ratory movement to the shaft, clam ing means upon the shaft below the said rub, and a washer of refractory material interposed between the said hub and the said clamping means.

4. A gyratory crusher comprising in combination, a base having a plurality of superposed plates, a shell or mortar having a plurality of flanges engaging the said plates, and similar flanges on its upper edge, standards upon the latter, a bearing member connecting the said standards, a shaft having a crush ing member within the mortar, its lower extremity engaging the base, and means upon the bearing member adapted to impar a gyratory movement to the shaft.

5. A g *ratory crusher comprising in combination, a. base having a centra vertical bored extension, a vertically adjustable step within the bore, a shell or mortar upon the base, an upright shaft having a crushing element within the mortar, its lower extremity engaging the step, means to impart a gymtory motion to the shaft, and a cap comprising an annular rigid member and two annular flexible members connected to the rigid memher, one of said flexible members surrounding and engaging the shaft, while the other engages the circumferential surface of the said extension of the base.

In testimony whereof I have affixed my signature in presence of two witnesses.

CHARLES L. HATHAlVAY. Witnesses:

G. J. ROLLANDET, K. M. STUMP. 

